Funk? They attempted to measure what makes people want to dance in music. The only mention of "funk" in TFA is this: "Classic dance tunes in disco, funk, hip-hop and rhythm and blues also hit this sweet spot of syncopation, Witek says."

For all the funk lovers, if you ever get to Tokyo check out a music store called Disk Union. They have an entire floor devoted to soul and funk that is generally unavailable in the West due to copyright restrictions. I came home from that trip with about 20 CD's of music you will never find online. Link